Ravikumar, 522598-4 is LPG lock off oorl ( out of range low )
You will need a new lock off valve kit that comes with a new pig tail plug end from take, cut back from the plug about 3 inches both wires, this will take care of that fault, afterwards go into the dash and clear all DTC's, only reason why hydraulics would be locked out is because the truck will not run? If there are other stored faults look for your most recent ones by checking the hour meter.. let me know if this helps. Thanks